Base portion of binding for splitboard with holders for its fixation on skis

ABSTRACT

A flat board as a base plate of binding for splitboards with holders for its fixation on skis joined into a snowboard has a circular slit formed in the central part of the board. The circular slit is equipped with a perimeter recessing for demountable fixing of a contact ring which is on its inner perimeter equipped with two couples of opposed dents designed for connection with a holder. The contact ring is also modified between the dents for insertion of end pins of locking eccentric. The locking eccentric is formed by an axial shaft with end pins protruding from end hubs formed at the both ends of the axial shaft.

FIELD OF INVENTION

The invention relates to area of use of equipment for pursuit of winter sports and regards construction of a base portion of binding for splitboard with holders for its fixation on skis, which enables easy unfastening and fastening to skis configured into a shape of snowboard.

PRESENT PRIOR ART

In recent years has come to massive spread not only of snowboarding but also of splitboarding, which is based on use of a lengthwise divided snowboard into two boards when is possible to use them connected for a downhill ride and when they are divided they can be used in an uphill ascend as classic hiking skis in similar way as skialp. For performance of this alternative functions was necessary to modify the classic snowboard binding for possibility of easy modification for various modes of ride and complete it with other functional elements which would enable easy connection and disconnection of snowboard board into two separate boards and also would provide a safe fixation of base portion of the binding for both modes of use.

There were invented and operated many systems where is solved construction and locking of base portion of binding and whose designs were described for examples in the files U.S. Pat. No. 7,823,905, U.S. Ser. No. 10/035,058, US20140210187, US2012274036, US2015014962, WO2018138052, US2013341889 or U.S. Pat. No. 9,884,243. Some of these solutions have quite structurally complicated fixation systems with use of many movable parts whose functionality gets worse when are frozen or clogged with snow. Other systems with simple structure are more demanding for manipulation and their functionality also gets worse when they are frozen or clogged with snow.

The aim of presented design is to introduce a new conception of base portion of binding for splitboard with holders for its fixation to skis whose simple structure enables easy change of various modes of use, namely an ascending mode, when the splitboard is split into two skis and is used for uphill climb by the help of climbing skins (strips of material attached to undersides to provide traction), whereas the binding is in its tip swivel way fixed to skis, and a snowboarding mode, when are given skis connected into one snowboard board and the binding is used as a classic snowboard binding. The system of fastening and unfastening of the base portion is functionally reliable, in comparison with known solutions is much more resistant against clogging with snow and freezing and guarantees high comfort of service for user.

ESSENCE OF THE INVENTION

Defined goal is achieved with an invention which is a base portion of binding for splitboard with holders for its fixation on skis connected to each other to form a snowboard board, formed by a flat board whose front face is modified for fixation to a front strap, where the essence of the invention is, that in the central part of the board is formed a circular slit, equipped with perimeter recessing on which is embedded and demountable way fixed a contact ring, which is on its inner perimeter equipped with two couples of opposed dents designed for connection with a holder, whereas between the dents is the ring modified for insertion of end pins of locking eccentric, which is formed by an axial shaft modified for a 180° flip over, whereas on both end parts of the axial shaft are made end hubs from which are in collinear way with the axial shaft positioned the end pins.

In advantageous design there are on the ring between the dents fixed flanges, whereas size of horizontally situated openings of the flanges corresponds with diameter of the end pins of the eccentric, whereas there is, in the central part of the shaft formed a fixating collar, in which is in the perpendicular direction to the axis of the shaft fixed a shifting lever, whose length corresponds with the radius of the circular slit, and also the end pins of the locking eccentric are on the shaft positioned opposed or co-directionally.

Likewise is advantageous when the holders for fixation of the board to skis which are connected in a snowboard mode are formed by a solid flat latch which consists of a long arm and a short arm in whose join is fixed a positioning pin, where in the end parts of the shoulders are fixed support pivots, which are placed in the way, that during turning of the locking eccentric is ensured contact between the end hubs and the support pivots of the short arm and also the positioning pins, whereas the smallest distance between the support pivot of the short arm and the positioning pin correspond at least with the diameter of the end hub of the locking eccentric.

With this new design of the base portion and the holders for its fixation to skis according to the invention is achieved higher efficiency in that, that it enables simple setting of the base portion on joined splitboard with a simple locking only by turning of the lever of the locking eccentric from one position into another, whereas it has only one moving component.

DESCRIPTION OF ENCLOSED DRAWINGS

Particular examples of design of the invention are schematically illustrated in enclosed drawings where:

FIG. 1 is an axonometric view sideways from above on the board of the base portion,

FIG. 2 is an exploited view of the board from the FIG. 1,

FIG. 3a ) is a view of splitboard with holders on both skis,

FIG. 3b ) is an axonometric view of couple of the holders of the base portion,

FIG. 4a ) is a view of eccentric from above,

FIG. 4b ) is a side view of the eccentric

FIG. 4c ) is a view of an alternative design of the eccentric set in a contact ring,

FIG. 5 is a view from above of the base portion of the system fixed in the holder, when the eccentric is in locked position for a snowboard mode,

FIG. 6 is an axonometric view of the base portion from the FIG. 5,

FIG. 6a ) is a detail A of the end part of the eccentric in locked position from the FIG. 6,

FIG. 7 is a view from above of the base portion of the system, when the eccentric is in unlocked position during modification to ascending mode,

FIG. 8 is an axonometric view of the base portion from the FIG. 7,

FIG. 8a ) is a detail B of the end part of the eccentric in unlocked position from the FIG. 8,

The drawings which illustrate introduced invention do not, in any case, anyhow limit the extent of the protection stated in the definition, yet merely clarify the essence of the invention.

EXAMPLES OF DESIGN OF THE INVENTION

The base portion illustrated in FIG. 0.1 and FIG. 2 is formed by a basically rectangular flat board 1, in whose central part is made a circular slit 101, which is, in its lower part, equipped with a perimeter recessing 102, on which is placed and demountable way fixed, by the help of non-illustrated screws, a contact ring 2. The contact ring 2 is on its inner perimeter equipped with two couples of opposed dents 21, between which are fixed flanges 22, which are modified for insertion of end pins 35 of a locking eccentric 3. The locking eccentric 3 is formed by a axial shaft 31, in whose central part is formed a fixing collar 32, in which is in perpendicular direction to the axis of the shaft 31 fixed, preferably screwed on, a shifting lever 33, whose length corresponds with a radius of the circular slit 101, and by this is ensured possibility of contact of its end part with the surface of the contact ring 2. On both ends of axial shaft 31 are formed opposed two end hubs 34, from which are, in a co-linear way with the axial shaft 31 protruding end pins 35, whose diameter enables their insertion into the flanges 22. Lower surface of the base portion is, in the area between the circular slit 101 and a front face 11, equipped with a relieving cutout 12, which is connected with the upper surface of the board 1 with non-illustrated technological openings. Furthermore the board 1 is, in its front part, equipped with two slots 13 lengthwise situated along the side plates 14 and designed for fixation of a front buckle of the binding and on the front face 11 are formed two eyes 15 for possibility of coupling with a non-illustrated holder during reconfiguration for ascending mode. In the back part is lower surface of the board 1, in the area between the circular slit 101 and the back face 16, equipped with a relieve cutout 17, which is connected with the upper part of the board 1 by non-illustrated technological openings and which is modified for support of the board 1 with a non-illustrated back brace of the binding. Finally the side plates 13 in the back part of the board 1 are equipped with a set of tapped assembly holes 18, designed for fixation of an arc strap for fixation of a back buckle and a support foot of the binding.

For option of fixation of the board 1 of the base portion on the splitboard are necessary holders 5, which are fixed in predetermined positions on upper surfaces of skis 4. The holders 5 are formed with a solid flat lath 51 which consists of a long arm 511 and an arched short arm 512, in whose join is fixed a positioning pin 513. In the end parts of the arms 511 and 512 are fixed support journals 514, which have to be on skis, for provision of function of fixation of the binding into a snowboard mode, fixed side opposed as it is illustrated in FIG. 3. The arms 511 and 512 are then situated in the way, that the centers of the support journals 514 and the centre of the positioning pin 513 are not in one line but on one circle, whereas the distance between the support journal 514 of the short arm 512 and the positioning pin 513 corresponds with a maximal width of the end hub 34 of the locking eccentric 3.

During configuration of the splitboard for the snowboard mode there are at first connected the both skis 4 by the help of central couplings and top couplings into the shape of a snowboard board as it is illustrated in FIG. 3a ). Then is on the couples of holders 5 placed the board 1 in the way, that the support journals 514 are in the area of formation of dents 21 of the contact ring 2 and the end hubs 34 are between the support journals 514 and the positioning pins 513, as it is illustrated in FIG. 7 and FIG. 8. With following flip over of the shifting lever 33 of the locking eccentric 3 of 180° there comes to brace of the end pins 35 in the flanges 22 and simultaneous brace of the end hubs 34 against the support journals 514. Herewith comes to turn of the board 1 with the contact ring 2 and contact of all dents 21 with the support journal 514 and to vertical as well as horizontal fixation of the board 1 to the snowboard. For release of the position of the board 1 from the snowboard mode comes, after release of bots from the binding, to flip over of the shifting lever 33 of 180°, and herewith comes to brace of the end pins 35 in the flanges 22 and to simultaneous brace of the end hubs 34 against the positioning pin 513, whereby comes to turn of the board 1 with the contact ring 2 into initial position which is illustrated in FIG. 7 a FIG. 8, thus is possible to lift the base portion.

Described design is not only possible solution according to the invention, but without any influence of its essence is possible, for example, by the locking eccentric 3 to place the end hubs 34 co-directionally to the axial shaft 31 as it is illustrated in FIG. 4c ). It is also possible to shape the dent 21 of the contact ring 2 and the support journal 514 of the holder 5 anyhow, in the way that there comes to mutual contact. Likewise is not decisive design of the board 1, which can be shaped and modified to different sizes of snowboard boots and also is not important how are designed fixation and support elements of the base portion. With fixation of all four support journals 514 and two positioning pins 513 in the way for them to be in the same position as in the holders 5 on the skis which are configured into the snowboard board, in non-specified way to classic snowboard, it is possible to use this system for connection of the board 1 with classic snowboard.

INDUSTRIAL UTILITY

The base portion for splitboard according to the invention is designed for enrichment of offer of sport equipment for winter sports with design which offers maximal operational comfort for the user with guarantee of easy manipulation during reconfiguration and minimization of failures of operating components.

REFERENCE NUMERALS

-   1 Board -   101 Circular slit -   102 Perimeter recessing -   11 Front face -   12 Front relieve cutout -   13 Slot -   14 Side plate -   15 Eye -   16 Back face -   17 Back relieve cutout -   18 Assembly hole -   2 Contact ring -   21 Dent -   22 Flange -   3 Locking eccentric -   31 Axial shaft -   32 Fixing collar -   33 Shifting lever -   34 End hub -   35 End pin -   4 Skis -   5 Holder -   51 Lath -   511 Long arm -   512 Short arm -   513 Positioning pin -   514 Support journal 

1. A base portion of binding for splitboard with holders for its fixation on skis which are joined into a snowboard board is formed with a flat board, whose front face is modified for fixation to a front strap, wherein, in the central part of the board is formed a circular slit which is equipped with a perimeter recessing, on which is placed and demountable way fixed a contact ring, which is on its inner perimeter equipped with two couples of opposed dents designed for connection with a holder, whereas between the dents is the ring modified for insertion of end pins of a locking eccentric, which is formed with an axial shaft modified for a flip over of 180°, whereas on both ends of the axial shaft are formed end hubs, from which, in a co-linear way with the axial shaft, protrude the end pins.
 2. The base portion according to the claim 1, wherein, are on the ring between its dents fixed flanges, whereas the size of horizontally situated openings of the flanges corresponds with the diameter of the end pins of the eccentric.
 3. The base portion according to the claim 1, wherein, in the central part of the axial shaft is formed a fixing collar, in which is in direction which is perpendicular to the axis of the axial shaft fixed a shifting lever, whose length corresponds with the radius of the circular slit.
 4. The base portion according to claim 1, wherein, the end pins of the locking eccentric are on the shaft placed either counter directionally or co-directionally.
 5. The base portion according to claim 1, wherein, the holders for fixation of the board to skis which are joined in the snowboard mode are formed with a solid flat lath which consists of a long arm and a short arm, in whose join is fixed a positioning pin, where in the end parts of the arms and are fixed support journals, which are placed in the way that during turning of the locking eccentric is ensured contact between the end hubs and the support journals of the short arm and even the positioning pins, whereas the shortest distance between the support journal of the short arm and the positioning pin corresponds with at least the diameter of the end hub of the locking eccentric.
 6. The base portion according to the claim 2, wherein, in the central part of the axial shaft is formed a fixing collar, in which is in direction which is perpendicular to the axis of the axial shaft fixed a shifting lever, whose length corresponds with the radius of the circular slit.
 7. The base portion according to claim 2, wherein, the end pins of the locking eccentric are on the shaft placed either counter directionally or co-directionally.
 8. The base portion according to claim 3, wherein, the end pins of the locking eccentric are on the shaft placed either counter directionally or co-directionally.
 9. The base portion according to claim 2, wherein, the holders for fixation of the board to skis which are joined in the snowboard mode are formed with a solid flat lath which consists of a long arm and a short arm, in whose join is fixed a positioning pin, where in the end parts of the arms and are fixed support journals, which are placed in the way that during turning of the locking eccentric is ensured contact between the end hubs and the support journals of the short arm and even the positioning pins, whereas the shortest distance between the support journal of the short arm and the positioning pin corresponds with at least the diameter of the end hub of the locking eccentric.
 10. The base portion according to claim 3, wherein, the holders for fixation of the board to skis which are joined in the snowboard mode are formed with a solid flat lath which consists of a long arm and a short arm, in whose join is fixed a positioning pin, where in the end parts of the arms and are fixed support journals, which are placed in the way that during turning of the locking eccentric is ensured contact between the end hubs and the support journals of the short arm and even the positioning pins, whereas the shortest distance between the support journal of the short arm and the positioning pin corresponds with at least the diameter of the end hub of the locking eccentric.
 11. The base portion according to claim 4, wherein, the holders for fixation of the board to skis which are joined in the snowboard mode are formed with a solid flat lath which consists of a long arm and a short arm, in whose join is fixed a positioning pin, where in the end parts of the arms and are fixed support journals, which are placed in the way that during turning of the locking eccentric is ensured contact between the end hubs and the support journals of the short arm and even the positioning pins, whereas the shortest distance between the support journal of the short arm and the positioning pin corresponds with at least the diameter of the end hub of the locking eccentric. 